<template>
  <div class="app-container">
    
     <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input 
        v-model="teacher.name"
        style="width:200px"
        />
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number 
        v-model="teacher.sort" 
        controls-position="right" 
        :min="0"
        :precision="0"
        :step="1"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>

      <!-- 讲师头像： -->
     <el-form-item label="讲师头像">
        <el-row :gutter="20">
          <el-col :span="24">
          <!-- 头像缩略图 -->
            <pan-thumb :image="teacher.avatar"/>
          </el-col>
          <el-col :span="24">
            <!-- 文件上传按钮 -->
            <el-button 
            type="primary" 
            icon="el-icon-upload" 
            @click="imagecropperShow=true"
            >
            添加头像
            </el-button>
          </el-col>
        </el-row>
      <!--
      :key：类似于id，如果一个页面多个图片上传控件，可以做区分
      :url：后台上传的url地址
      -->
          <image-cropper
                        v-show="imagecropperShow"
                        :width="300"
                        :height="300"
                        :key="imagecropperKey"
                        :url="BASE_API+'/eduoss/fileoss'"
                        field="file"
                        @close="close"
                        @crop-upload-success="cropSuccess"/>
      </el-form-item>


      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="save">保存</el-button>
        <el-button @click="cancel">取消</el-button>
      </el-form-item>
    </el-form>

  </div>
</template>
<script>
import teacherApi from '@/api/edu/teacher'
import ImageCropper from '@/components/ImageCropper'
import PanThumb from '@/components/PanThumb'
export default {
  components: { ImageCropper, PanThumb },
  data() {
    return {
      teacher:{
        name: '',
        sort: 0,
        level: 1,
        career: '',
        intro: '',
        avatar: ''
      },
      //上传弹框组件是否显示
      imagecropperShow:false,
      imagecropperKey:0,//上传组件key值
      BASE_API:process.env.BASE_API,
      saveBtnDisabled:false, // 保存按钮是否禁用,
    }
  },
  created() { 
    this.init();
  },
  watch: {  //监听
    $route(to, from) { //路由变化方式，路由发生变化，方法就会执行
      this.init()
    }
  },
  methods:{
    close() { //关闭上传弹框的方法
        this.imagecropperShow=false
        //上传组件初始化
        this.imagecropperKey = this.imagecropperKey+1
    },
    //上传成功方法
    cropSuccess(data) {
      this.imagecropperShow=false
      //上传之后接口返回图片地址
      this.teacher.avatar = data.url
      this.imagecropperKey = this.imagecropperKey+1
    },

    save() {
        this.saveTeacher()
    },
    //添加讲师的方法
    saveTeacher() {
     
      teacherApi.addTeacher(this.teacher)
        .then(response => {//添加成功
          //提示信息
          this.$message({
              type: 'success',
              message: '添加成功!'
          });
          //回到列表页面 路由跳转
          this.$router.push({path:'/teacher/list'})
        })
      
    },
     cancel() {
      this.$confirm('内容未保存，是否取消添加', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        // 点击确定，返回列表页面
        this.$router.push({path: '/teacher/list'});
      }).catch(() => {
        // 点击取消，不做处理，留在本页面
      });
    }

  }
}
</script>